please note that this is purely speculative and based on fictional scenarios, as time travel has not been scientifically proven.
If a time traveler from the future visited our modern society, they might find our technology relatively primitive compared to what they are accustomed to in their own time. They could express amazement at the progress we have made in certain areas but may also find many aspects of our technology outdated or inefficient.
Depending on how far in the future they come from, they might be accustomed to highly advanced artificial intelligence, advanced robotics, virtual reality, augmented reality, sustainable energy sources, advanced medical advancements, and even interplanetary or interstellar travel.
They might remark on our reliance on physical devices such as smartphones and computers, as they may have transitioned to more integrated and seamlessly connected technologies. They could find our internet speeds, data storage capabilities, and computing power relatively limited compared to what they are accustomed to.
Moreover, they might be accustomed to advanced forms of transportation, such as hyperloop systems, flying vehicles, or even teleportation. Our current modes of transportation, including cars, trains, and airplanes, might seem slow and inefficient to them.
Ultimately, their perspective on our technology would heavily depend on the advancements and innovations of their own time, which could be far beyond our current comprehension.